Overview
The OP297GS-REEL, produced by Analog Devices Inc., is a dual low bias current precision operational amplifier. This device is notable for its combination of precision, low power consumption, and extremely low input bias current, making it suitable for a wide range of applications. The OP297 is packaged in an 8-lead SOIC (Small Outline Integrated Circuit) package, which is industry-standard and space-saving. It operates from ±2 V to ±20 V supplies and is characterized by its high precision performance, including very low offset voltage and drift, and high open-loop gain.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Input Offset Voltage | VOS | VS = ±15 V, -40°C ≤ TA ≤ +85°C | 25 | 50 | 80 | μV |
| Average Input Offset Voltage Drift | TCVOS | -40°C ≤ TA ≤ +85°C | 0.2 | 0.6 | 0.6 | μV/°C |
| Input Offset Current | IOS | VCM = 0 V | 20 | 100 | 200 | pA |
| Input Bias Current | IB | VCM = 0 V | 20 | 100 | 200 | pA |
| Large Signal Voltage Gain | AVO | VOUT = ±10 V, RL = 2 kΩ | 1200 | 3200 | 3200 | V/mV |
| Supply Current (per amplifier) | ISY | - | - | 625 | μA | |
| Common-Mode Rejection Ratio | CMR | - | - | 120 | dB |
Key Features
- Very low offset voltage: up to 50 μV maximum and low drift of 0.6 μV/°C maximum.
- Extremely low input bias current: under 100 pA at all temperatures.
- High open-loop gain: minimum of 2000 V/mV, ensuring high linearity.
- Low supply current: under 625 μA per amplifier.
- High common-mode rejection ratio: over 120 dB, minimizing offset voltage changes.
- Operates from ±2 V to ±20 V supplies, with a common-mode range extending to within 1 V of either rail.
- Excellent ac characteristics, highly stable over the full operating temperature range.
Applications
- Strain gage and bridge amplifiers.
- High stability thermocouple amplifiers.
- Instrumentation amplifiers.
- Photocurrent monitors.
- High gain linearity amplifiers.
- Long-term integrators/filters.
- Sample-and-hold amplifiers.
- Peak detectors.
- Logarithmic amplifiers.
- Battery-powered systems.
Q & A
- What is the input offset voltage of the OP297GS? The input offset voltage is up to 50 μV maximum.
- What is the input bias current of the OP297GS? The input bias current is under 100 pA at all temperatures.
- What is the open-loop gain of the OP297GS? The open-loop gain is a minimum of 2000 V/mV.
- What is the supply current per amplifier for the OP297GS? The supply current is under 625 μA per amplifier.
- What is the common-mode rejection ratio of the OP297GS? The common-mode rejection ratio is over 120 dB.
- What is the operating voltage range for the OP297GS? The OP297GS operates from ±2 V to ±20 V supplies.
- What are some common applications of the OP297GS? Common applications include strain gage and bridge amplifiers, thermocouple amplifiers, instrumentation amplifiers, and more.
- What package types are available for the OP297GS? The OP297GS is available in an 8-lead SOIC package.
- Is the OP297GS RoHS compliant? Yes, the OP297GS is RoHS compliant.
- What is the temperature range for the OP297GS? The OP297GS operates over a temperature range of -40°C to +85°C.
